Inner liner for automobile tires



H. N. WAYNE. INNER LINER FOR AUTOMOBILE TIR-ES.

ArPLlcATmN min AuG.21. 1920.

Ll 91%. Patented May 23, W22.

` i naief-iin l tit HERBERT`N. WAYNE OF WASHINGTON, DISTRICT OF COLUMBIA.

NNER LINER A'EOMGBIELE TRES.

To all 107mm t may concern,

Be it known that l, Henner-zr ll.` WAYNE, ai citizen of the United States, residing at ldashington, District of Columbia, have in vented new and useful Improvements in inner Liners for Automobile Tires, of which thc following is a specification.

This invention relates to a pneumatic tire and particularly pertains to a reinforced inner protective lining therefor, and commer cially known as an inner tire.

lt is the principal. object of this invention to provide an effective economical punctureproof reinforcement for the tire casing, which may be inserted between the inner tube and the shoe; it is also an object to provide mea-ns in such a reinforced lining whereby the free edges thereof will be further reinforced to prevent rim-cut blowouts; it is a further object of my invention to provide means whereby internal friction, be-

tween the inner tire and the casing` will be greatly diminished if not completely eliminated; it is also a further object of my inventon to provide reinforcing' means sufficiently elastic to allow full and complete adjustment of the inner tire in oversize as well as exact size casings while providing said reinforcing meansv with sufficient resistance to prevent a weak casing from blowing out. v

The invention, its features and the manner in which it accomplishes its objects, will be best understood from the `following' description, reference being had for that purpose to the accompanying drawings z Fig. 1 is a sectional view of my improved inner tire.

Fig. 2 is a sectional view of a modified form thereof. i, y v l Fig. 3 is a view in cross section of my improved inner tire surrounding` the inner tube and in place within the casing.

Fig. 4 is a cross section showing casing, inner tube and tire as they appear when depressed in contactwith the ground.

Referring more particularly to the drawings; 10 represents the inner tube as ordinarily used in pneumatic tires; 11 represents the inner tire as applied between the tube and the casing; 12 represents the tire shoe or casing; 13 represents thethickened tread portion of the inner tire; 13a a soft rubber cover, preferably containing insufficient sulphur for complete vulcanization;

Specification of Letters Patent.

`.lipplication filed August 2l, 192.0. Geriatric. 405,004.

tinue the woven or cord fabric completely around the inner surface of the inner tire as shown at 16 Fig. 1 and may use two or more layers of such fabric for the largest size tires, and a fibrous compound of rubber and ground cotton waste (such as rubberized fabric scraps or waste from hose, belting or tire trimmings) for the main upper side wall and tread portions. i

It is important that one of the endless restraining bands 15 be so positioned in the loose flap portion that it will allow an adjustable lateral movement approximately parallel to the face of the rim, thereby permitting adjustment to any possible variation in size (of the cross sectional inner circum` ference) of different makes of casings, but will effectively restrain said loose flap portion from bulging out through a rim cut blowout as is common with all ordinary reliners and other so-called inner tires. It is also advisable, though not essential, that the outer surface of the inner tire body be coated with a thin layer of soft, preferably unvulcanized, rubber to prevent frictional movey ment between the inner-tire and the Shoe.

phur is designed to afford a nonabrasive,

antifriction surface in contact with the inside surface ofthe casing.

lf desired, this outer surface may be coated with a layer of rubber cement and thus made to adhere tightly to the casing.

An inner tire of the structure and character described will obviously reduce punctures to a minimum, and because of the limttf lll() and methods ol construction of my improved inner tire, what I claim is 1. An inner lining for tirecasings liaring its main body portion composed of fibrous material in mixed combination with rubber, and an outer covering of unvulcanized rubber.

2. An inner liningfor tire cnsings, having its body portion composed of libre material in mixed combination with rubber, and an outer covering of soft non-fibrous rubber.

In testimony whereof I aflix my signature` HERBERT N. VAYNE. 

